Debug Port Check - Toshiba PORTEGE R200 Maintenance Manual

2.4 System board Troubleshooting
Procedure 2
Check the D port status by a debug port test. The tool for debug port test is shown below.
The test procedures are follows:
1. Connect the debug test cable to the connector CN3400 of the system board. For
2. Connect the debug port test cable and RS-232C cross-cable to the test board.
3. Connect the RS-232C cross-cable to the PC that displays the results.
PC that displays
the test results
4. Boot the computer in MS-DOS mode.
PORTEGE R200 Maintenance Manual (960-519)
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Debug Port Check

Figure 2-2 A set of tool for debug port test
disassembling to connect the test cable, refer to Chapter 4.
RS-232C cross-cable
Test board
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Debug port test cable
CN3400 System board
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2 Troubleshooting
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